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Ch 1 & 2 Test
Ch 1 & 2 Test
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Chapter 1- Scientific Method & Chapter 2- Chemistry of Life
Flashcards
40 cards
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Questions
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Answers
1
What is the area called where the substrate and enzyme bind together? (Represented by C)
Enzyme
Active site
Product
Substrate
2
Your hand re flexing backwards after touching a hot pan shows you responding to
a stimulus
cells
growth and development
reproduction
3
Which meal raises your metabolic rate the MOST after 3 hours?
lipids
nucleic acids
carbohydrates
proteins
4
Which letter represents the Substrate?
D
A
C
B
5
This variable is measured during an experiment
unknown variable
independent variable
confounding variable
dependent variable
6
What type of bond forms when atoms share a pair of electrons?
Peptide
Covalent
Ionic
Hydrogen
7
You notice you get hyper when you drink coffee, what attitude of science do you demonstrate?
open mindedness
skepticism
curiosity
creativity
8
What does the orange line indicate in the graph?
Exothermic
Active Site
Catalyst/Enzyme
Endothermic
9
Showing doubts about new research that was only done once and not replicated by other scientists.
skepticism
creativity
curiosity
open mindedness
10
Which statement is true about nucleic acids?
All of the above
Monomer is made of a sugar, phosphate group, & nitrogen base
DNA stores genetic information
RNA builds proteins
11
What range on the pH scale is an acid?
7
8-14
0-6
0-14
12
What macromolecule is nonpolar and made of fatty acids & glycerol?
Lipids
Carbohydrates
Proteins
Nucleic Acids
13
What type of reaction is the graph representing?
Activation energy
Catalytic
Exothermic
Endothermic
14
All living organisms have
teeth
brains
blood
DNA
15
What range on the pH scale is a base?
8-14
0-6
7
0-14
16
When sugar is dissolved into water, water is the
suspension
solution
solvent
solute
17
Process of breaking down food into energy
metamorphosis
differentiation
homeostasis
metabolism
18
To maintain a constant internal environment
differentiation
metamorphosis
metabolism
homeostasis
19
Carbohydrates can be broken down to provide
Catalysts
Genetic information
Energy for cells
a Defense
20
What is the reactant(s) in this chemical reaction?
O2
2H2O
2H2
All of the above
21
Polymers are made up of
Carbon
Sugars
Dimers
Monomers
22
What is the best definition of the term "theory," as it is used in science?
A theory is a guess or hunch about something that has occurred in nature.
A theory is based on verifiable laws and can be proven true.
A theory is a hypothesis that uses laws/observations to make an assumption.
A theory is a comprehensive set of ideas explaining a phenomenon in nature.
23
What is a monomer of a nucleic acid?
Galactose
Nucleotide
DNA
Fatty acids
24
What is the Independent Variable?
Months
# of Situps
# of Pushups
Days
25
What is the monomer of a protein?
Muscles
Catalyst
Enzyme
Amino acids
26
This variable is changed & tested during an experiment
confounding variable
dependent variable
independent variable
unknown variable
27
What type of reaction is this graph representing?
Activation energy
Exothermic
Catalytic
Endothermic
28
What is an example of a lipid?
All of the above
Fats
Steroid
Oils
29
In which group do the Plants 11/12/13 grow the best?
With only Nitrogen
With only Potassium
With all 3 fertlizers
With only Phosphorus
30
All organisms can make another life form of the same species through
homeostasis
reproduction
metabolism
cohesion
31
If A-> B+C is endothermic, what is B+C-> A?
exothermic
covalent bonding
ionic bonding
endothermic
32
Which one releases a H+ when it dissolves in water?
Acid
Base
Alkaline
Neutral solution
33
Which group has the highest initial increase of the metabolic rate?
lipids
proteins
nucleic acids
carbohydrates
34
Which one is a monosaccharide?
Sucrase
Amino acids
Glucose
Lactose
35
Lipids
Used to make hormones
Can be used as energy
Make up the cell membrane
All of the above
36
What is the amount of energy that needs to be absorbed to start a chemical reaction?
Bond energy
Activation energy
Endothermic reaction
Exothermic reaction
37
Water is
Neither
Both
Polar
Nonpolar
38
Which steps are in the scientific method
inference and hypothesis
observation and questions
controlled experiment
conclusion
39
What is the optimial pH for plant growth?
7.0-7.2
6.6-6.8
6.0-6.2
6.2-6.4
40
In what year did Fish/Chips & Pizza sell the same amount?
1975
1990
1983
1970
